Siemens SIMODRIVE 611A, Installation And Planning Manual

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VS
07.94
1-126
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Siemens AG 1997 All Rights reserved
SIMODRIVE 611A Installation and Start–Up Guide/IAA/–04.97 Edition
Continued: Motor overtemperature
A delay time is not permissible.
If the motor is not thermally monitored, when an overload situation occurs or if the drive converter was over
dimensioned, the complete drive could be destroyed.
Standard interface
Current actual value 10 V for I
max
All outputs have a 10 k output resistance
Red LED: ”Motor encoder fault”
Tach. fault, rotor position encoder
fault
W T H2/M
M X H1/A
general reference ground
Current setpoint 10 V at I
max
Red LED: ”Axis fault”
Speed controller at its end stop
Heatsink temperature
Motor temperature rise
I
2
t monitoring
Speed actual value 10 V at rated speed
(1FT503
V
/4
V
–0AF71: 11 V)
Fig. 8-2
Sequence when the temperature– or I
2
t monitoring responds
S
I
2
t–monitoring
– min. 250 ms before limiting starts, an alarm is issued at terminal 5.x of the NE module (non–lat-
ching)
– fault display H1 is output when limiting starts.
S
Heatsink temperature monitoring:
– an alarm is issued at terminal 5.x of the NE module when the heatsink shutdown temperature is
reached (non–latching)
– the pulses are inhibited, fault H1 is displayed and a signal is issued at terminal 72/terminal
73/terminal 74 of the NE module after typically 4 s (latching)
Motor overtemperature
SIMODRIVE 611 feed modules with closed–loop control for 1FT5 servomotors are equipped with an eva-
luation circuit for the PTC thermistors integrated in the motor windings.
The motors are protected from inadmissible high winding temperatures with the monitoring combination
(tripping temperature 150
C).
As the drive shouldn’t unpredictably intervene in the machining process, the trip is only signaled to the
SIMODRIVE 611 or centrally via terminals 5.1, 5.2 and 5.3 of the infeed module (latching) as signal when
the response temperature is reached (the drive is not shutdown).
There is no internal system response to protect the motor. The user must ensure that the motor can ther-
mally recover after the signal has been issued, by appropriately configuring the adaptation control. In this
case, it may be required to immediately shutdown the motor.
A delay time is not permissible.
If the motor is not thermally monitored, when an overload situation occurs or if the drive converter was over
dimensioned, the complete drive could be destroyed.
Test sockets and
fault displays
Feed modules (VS)
03.96 04.97 8.1.2 Standard interface